Apparatus for apportioning or dividing material in prescribed proportions



Nov. 3, 1931. H. o. e. SCHILLING APPARATUS FOR APPORTIONING OR DIVIDING MATERIAL IN PRESCRIBED PROPORTIONS Filed Oct. 11. 1929 35 able cam is provide Patented Nov. 3, 1931 ,UNITED STATES PATENT OFFICE EUGO OTTO GEOBG SCHILLING, OF HAMBURG, GERMANY, ASSIGNOR OF ONE-HALF T ALFRED GUSTAV PUHL, OF HAMBURG, GERMANY Arrmrusron APPORTIONING on mvinme MATERIAL n: rmrscnmnn PROPOBTIONS Application fled October 11, 1929, Serial No. 399,040, and in Germany October 18, 1928.

There arealready known devices'for apportioning or dividing material such as or like material to be filled ugh for pastr the like in prescribed proporinto tubes and tions, in which the material is pressed into' a chamber containlng a movable piston and having an opening adapted to be temporarily closed by a slide, throu h which opening the material is extruded y the piston.

An object of the present invention is to provide an apparatus of this kind whereby the amount of material apportioned may be adjusted or exactly regulated. With this object in view provision is made'whereby one part or section of the piston which has to advance the material, is releasable in such manner that on the piston performing its stroke the said part or section is adapted to recede under the influence of the pressure exercised on the material until it is entrained b a stop arranged adjustably on the piston. I Ciirresponding to the adjustment of this stop the released movable part of the piston may recede more or less to allow more or less material to enter the gap afforded by the piston on its last advance, whereby the amount of material advanced is correspondingly reduced. The part released from the piston is entrained on the initial forward movement by an arm pivoted to this piston or its driving means in order to secure operation on the material over the entire surface of the piston. For securing release of the said part of the piston at the roper time an ad ust-' d on the frame for releasing the entraining arm. This cam is preferably given an inclined surface in the path of a stud or roller mounted onthe entraining arm in order to'withdraw the arm from the part of the piston to be released by engaging the said inclined surface.

Fig. 1 of the accompanying drawings is a vertical section, and v v Fig. 2 a plan of the apparatus.

Fig. 3 is a section on the line 3-3 of Fig. 1.

As is known, in apparatus of this kind the material delivered by the rollers a is continuously pressed into the chamber 6. At the outer end of the chamber 1) there is an opening or nozzle 0 which can be temporarily closed by the slide d. This slide is connected by a link 6 with a two-armed lever 9 adapted to be operated by a cam f. Tin slide (1 is also connected by a link c with a lever g mounted on the same shaft k as the lever g. The cam fis mounted on a crank shaft 2', which is connected by a connecting rod 10 with a piston i n of the piston m is slidable within the piston m. The part n of the piston m within the.

chamber 6 is sectional, including two heads 11. and n connected by two rods 11/, the head n extending to the outer piston-surface (m) having a close fit within the main piston-m.

For the head n exterior to the casing b of the chamber a gap is provided in the part m unitary with the piston part m (Fig. 2) An arm 0 engages the head n of the piston part n to entrain the piston art n in the movement of the piston m. operating in such manner that the arm 0 constantly engages the head n, the material between the edge p of the inlet of the chamber 12 and-the sllde d will be extr'udedthrough the nozzle 0 as soon as the slide is withdrawn.

This operation will take place when largesize pieces of dough or the like are required. In order to obtain smaller pieces means are provided to withdraw the arm 0 from enagement with the head n? so soon as the front ace of the piston passes the edge p. These hen the piston is means comprise an adjustable earn (7 having a cam face 7' at its forward end. This cam g is so adjusted that on the forward movement of the piston a stud s on the arm 0 or, an antifriction roller 8' mounted on the stud s engages the cam face 7", and, when running thereon, releases the arm 0 from engagement with the head M, which thereupon will allow the piston part n to recede under the action of the pressure exercised on the material, thus reducing the amount extruded through the nozzle 0, because the gap within the piston m will receivea corresponding amount of the material. In order to regulate the amount of material entering the said gap an adjustable stop If is mounted on the PI'OJBCting part m of the piston m, said stop projecting into the path of the receding head a As soon as the stop v engages the head a the receding piston part n finds an abutment and therefore can no longer recede. Beginning from the zero position the cam q and the stop t will be adjusted corresponding to the amount of the material to be apportioned, so-that from the moment the arm 0 is lifted by the cam 9 up to the point at which the head a is engaged by the stop if the distance is determined for which the piston part n may recede to provide a correspondingly large gap within the piston m. It has been ascertained that the amount of material to be apportioned can be regulated to the utmost accuracy by the aid of the means described above.

It is advisable to arrange on the cam g and the adjustable stop t, which can be ti htened by a screw u, a pointer 12 movable relatively 1 to the scale w.

In order to return the retractible part n of the piston m to its original position so that its front face coincides with that of the main part of the piston, a stop a: is provided on the frame, against which stop the head a may abut on its return movement, holding it in its position until the piston m returns also to its normal position.

\Vhen very soft or liquid material is to be apportioned, it is advisable to provide on the head a a further stop 3/ adapted to abut against a surface 2 of the cam g and be retained thereby to obtain the desired gap within the piston.

I claim An apparatus for apportioning or dividing material comprising a chamber, a piston in said chamber for extruding material from said chamber, means for driving said piston, said chamber having an opening, a slide normally closing said opening. said piston comprising a plurality of sections, one section being connected operatively with another section in such manner that its stroke is adjustable independently of the stroke of said other sections, said sections cooperating in extruding material from said chamber, an arm pivoted to said means for driving said piston, a head against which said arm normally bears mounted on the piston rod of the In testimony whereof I have signed my name to this specification.

HUGO OTTO GEORG SCHILLING. 

